beautify-tests.js

/*global js_beautify: true */
/*jshint */

function run_beautifier_tests(test_obj, Urlencoded, js_beautify)
{

    var opts = {
        indent_size: 4,
        indent_char: ' ',
        preserve_newlines: true,
        jslint_happy: false,
        keep_array_indentation: false,
        brace_style: 'collapse',
        space_before_conditional: true,
        break_chained_methods: false
    };

    function test_beautifier(input)
    {
        return js_beautify(input, opts);
    }

    var sanitytest;

    // test the input on beautifier with the current flag settings
    // does not check the indentation / surroundings as bt() does
    function test_fragment(input, expected)
    {
        expected = expected || input;
        sanitytest.expect(input, expected);
    }



    // test the input on beautifier with the current flag settings
    // test both the input as well as { input } wrapping
    function bt(input, expectation)
    {
        var wrapped_input, wrapped_expectation;

        expectation = expectation || input;
        test_fragment(input, expectation);

        // test also the returned indentation
        // e.g if input = "asdf();"
        // then test that this remains properly formatted as well:
        // {
        //     asdf();
        //     indent;
        // }

        if (opts.indent_size === 4 && input) {
            wrapped_input = '{\n' + input.replace(/^(.+)$/mg, '    $1') + '\n    foo = bar;\n}';
            wrapped_expectation = '{\n' + expectation.replace(/^(.+)$/mg, '    $1') + '\n    foo = bar;\n}';
            test_fragment(wrapped_input, wrapped_expectation);
        }

    }

    // test the input on beautifier with the current flag settings,
    // but dont't
    function bt_braces(input, expectation)
    {
        var braces_ex = opts.brace_style;
        opts.brace_style = 'expand';
        bt(input, expectation);
        opts.brace_style = braces_ex;
    }

    function beautifier_tests()
    {
        sanitytest = test_obj;
        sanitytest.test_function(test_beautifier, 'js_beautify');

        opts.indent_size       = 4;
        opts.indent_char       = ' ';
        opts.preserve_newlines = true;
        opts.jslint_happy      = false;
        opts.keep_array_indentation = false;
        opts.brace_style       = "collapse";


        bt('');
        bt('return .5');
        test_fragment('   return .5');
        test_fragment('   return .5;\n   a();');
        bt('a        =          1', 'a = 1');
        bt('a=1', 'a = 1');
        bt("a();\n\nb();", "a();\n\nb();");
        bt('var a = 1 var b = 2', "var a = 1\nvar b = 2");
        bt('var a=1, b=c[d], e=6;', 'var a = 1,\n    b = c[d],\n    e = 6;');
        bt('var a,\n    b,\n    c;');
        bt('a = " 12345 "');
        bt("a = ' 12345 '");
        bt('if (a == 1) b = 2;', "if (a == 1) b = 2;");
        bt('if(1){2}else{3}', "if (1) {\n    2\n} else {\n    3\n}");
        bt('if(1||2);', 'if (1 || 2);');
        bt('(a==1)||(b==2)', '(a == 1) || (b == 2)');
        bt('var a = 1 if (2) 3;', "var a = 1\nif (2) 3;");
        bt('a = a + 1');
        bt('a = a == 1');
        bt('/12345[^678]*9+/.match(a)');
        bt('a /= 5');
        bt('a = 0.5 * 3');
        bt('a *= 10.55');
        bt('a < .5');
        bt('a <= .5');
        bt('a<.5', 'a < .5');
        bt('a<=.5', 'a <= .5');
        bt('a = 0xff;');
        bt('a=0xff+4', 'a = 0xff + 4');
        bt('a = [1, 2, 3, 4]');
        bt('F*(g/=f)*g+b', 'F * (g /= f) * g + b');
        bt('a.b({c:d})', "a.b({\n    c: d\n})");
        bt('a.b\n(\n{\nc:\nd\n}\n)', "a.b({\n    c: d\n})");
        bt('a=!b', 'a = !b');
        bt('a?b:c', 'a ? b : c');
        bt('a?1:2', 'a ? 1 : 2');
        bt('a?(b):c', 'a ? (b) : c');
        bt('x={a:1,b:w=="foo"?x:y,c:z}', 'x = {\n    a: 1,\n    b: w == "foo" ? x : y,\n    c: z\n}');
        bt('x=a?b?c?d:e:f:g;', 'x = a ? b ? c ? d : e : f : g;');
        bt('x=a?b?c?d:{e1:1,e2:2}:f:g;', 'x = a ? b ? c ? d : {\n    e1: 1,\n    e2: 2\n} : f : g;');
        bt('function void(void) {}');
        bt('if(!a)foo();', 'if (!a) foo();');
        bt('a=~a', 'a = ~a');
        bt('a;/*comment*/b;', "a; /*comment*/\nb;");
        bt('a;/* comment */b;', "a; /* comment */\nb;");
        test_fragment('a;/*\ncomment\n*/b;', "a;\n/*\ncomment\n*/\nb;"); // simple comments don't get touched at all
        bt('a;/**\n* javadoc\n*/b;', "a;\n/**\n * javadoc\n */\nb;");
        test_fragment('a;/**\n\nno javadoc\n*/b;', "a;\n/**\n\nno javadoc\n*/\nb;");
        bt('a;/*\n* javadoc\n*/b;', "a;\n/*\n * javadoc\n */\nb;"); // comment blocks detected and reindented even w/o javadoc starter
        bt('if(a)break;', "if (a) break;");
        bt('if(a){break}', "if (a) {\n    break\n}");
        bt('if((a))foo();', 'if ((a)) foo();');
        bt('for(var i=0;;) a', 'for (var i = 0;;) a');
        bt('for(var i=0;;)\na', 'for (var i = 0;;)\n    a');
        bt('a++;', 'a++;');
        bt('for(;;i++)a()', 'for (;; i++) a()');
        bt('for(;;i++)\na()', 'for (;; i++)\n    a()');
        bt('for(;;++i)a', 'for (;; ++i) a');
        bt('return(1)', 'return (1)');
        bt('try{a();}catch(b){c();}finally{d();}', "try {\n    a();\n} catch (b) {\n    c();\n} finally {\n    d();\n}");
        bt('(xx)()'); // magic function call
        bt('a[1]()'); // another magic function call
        bt('if(a){b();}else if(c) foo();', "if (a) {\n    b();\n} else if (c) foo();");
        bt('switch(x) {case 0: case 1: a(); break; default: break}', "switch (x) {\n    case 0:\n    case 1:\n        a();\n        break;\n    default:\n        break\n}");
        bt('switch(x){case -1:break;case !y:break;}', 'switch (x) {\n    case -1:\n        break;\n    case !y:\n        break;\n}');
        bt('a !== b');
        bt('if (a) b(); else c();', "if (a) b();\nelse c();");
        bt("// comment\n(function something() {})"); // typical greasemonkey start
        bt("{\n\n    x();\n\n}"); // was: duplicating newlines
        bt('if (a in b) foo();');
        bt('var a, b;');
        //  bt('var a, b');
        bt('{a:1, b:2}', "{\n    a: 1,\n    b: 2\n}");
        bt('a={1:[-1],2:[+1]}', 'a = {\n    1: [-1],\n    2: [+1]\n}');
        bt('var l = {\'a\':\'1\', \'b\':\'2\'}', "var l = {\n    'a': '1',\n    'b': '2'\n}");
        bt('if (template.user[n] in bk) foo();');
        bt('{{}/z/}', "{\n    {}\n    /z/\n}");
        bt('return 45', "return 45");
        bt('If[1]', "If[1]");
        bt('Then[1]', "Then[1]");
        bt('a = 1e10', "a = 1e10");
        bt('a = 1.3e10', "a = 1.3e10");
        bt('a = 1.3e-10', "a = 1.3e-10");
        bt('a = -1.3e-10', "a = -1.3e-10");
        bt('a = 1e-10', "a = 1e-10");
        bt('a = e - 10', "a = e - 10");
        bt('a = 11-10', "a = 11 - 10");
        bt("a = 1;// comment", "a = 1; // comment");
        bt("a = 1; // comment", "a = 1; // comment");
        bt("a = 1;\n // comment", "a = 1;\n// comment");
        bt('a = [-1, -1, -1]');

        // The exact formatting these should have is open for discussion, but they are at least reasonable
        bt('a = [ // comment\n    -1, -1, -1\n]');
        bt('var a = [ // comment\n    -1, -1, -1\n]');
        bt('a = [ // comment\n    -1, // comment\n    -1, -1\n]');
        bt('var a = [ // comment\n    -1, // comment\n    -1, -1\n]');

        bt('o = [{a:b},{c:d}]', 'o = [{\n        a: b\n    }, {\n        c: d\n    }\n]');

        bt("if (a) {\n    do();\n}"); // was: extra space appended

        bt("if (a) {\n// comment\n}else{\n// comment\n}", "if (a) {\n    // comment\n} else {\n    // comment\n}"); // if/else statement with empty body
        bt("if (a) {\n// comment\n// comment\n}", "if (a) {\n    // comment\n    // comment\n}"); // multiple comments indentation
        bt("if (a) b() else c();", "if (a) b()\nelse c();");
        bt("if (a) b() else if c() d();", "if (a) b()\nelse if c() d();");

        bt("{}");
        bt("{\n\n}");
        bt("do { a(); } while ( 1 );", "do {\n    a();\n} while (1);");
        bt("do {} while (1);");
        bt("do {\n} while (1);", "do {} while (1);");
        bt("do {\n\n} while (1);");
        bt("var a = x(a, b, c)");
        bt("delete x if (a) b();", "delete x\nif (a) b();");
        bt("delete x[x] if (a) b();", "delete x[x]\nif (a) b();");
        bt("for(var a=1,b=2)d", "for (var a = 1, b = 2) d");
        bt("for(var a=1,b=2,c=3) d", "for (var a = 1, b = 2, c = 3) d");
        bt("for(var a=1,b=2,c=3;d<3;d++)\ne", "for (var a = 1, b = 2, c = 3; d < 3; d++)\n    e");
        bt("function x(){(a||b).c()}", "function x() {\n    (a || b).c()\n}");
        bt("function x(){return - 1}", "function x() {\n    return -1\n}");
        bt("function x(){return ! a}", "function x() {\n    return !a\n}");

        // a common snippet in jQuery plugins
        bt("settings = $.extend({},defaults,settings);", "settings = $.extend({}, defaults, settings);");

        bt('{xxx;}()', '{\n    xxx;\n}()');

        bt("a = 'a'\nb = 'b'");
        bt("a = /reg/exp");
        bt("a = /reg/");
        bt('/abc/.test()');
        bt('/abc/i.test()');
        bt("{/abc/i.test()}", "{\n    /abc/i.test()\n}");
        bt('var x=(a)/a;', 'var x = (a) / a;');

        bt('x != -1', 'x != -1');

        bt('for (; s-->0;)t', 'for (; s-- > 0;) t');
        bt('for (; s++>0;)u', 'for (; s++ > 0;) u');
        bt('a = s++>s--;', 'a = s++ > s--;');
        bt('a = s++>--s;', 'a = s++ > --s;');

        bt('{x=#1=[]}', '{\n    x = #1=[]\n}');
        bt('{a:#1={}}', '{\n    a: #1={}\n}');
        bt('{a:#1#}', '{\n    a: #1#\n}');

        test_fragment('"incomplete-string');
        test_fragment("'incomplete-string");
        test_fragment('/incomplete-regex');

        test_fragment('{a:1},{a:2}', '{\n    a: 1\n}, {\n    a: 2\n}');
        test_fragment('var ary=[{a:1}, {a:2}];', 'var ary = [{\n        a: 1\n    }, {\n        a: 2\n    }\n];');

        test_fragment('{a:#1', '{\n    a: #1'); // incomplete
        test_fragment('{a:#', '{\n    a: #'); // incomplete

        test_fragment('}}}', '}\n}\n}'); // incomplete

        test_fragment('<!--\nvoid();\n// -->', '<!--\nvoid();\n// -->');

        test_fragment('a=/regexp', 'a = /regexp'); // incomplete regexp

        bt('{a:#1=[],b:#1#,c:#999999#}', '{\n    a: #1=[],\n    b: #1#,\n    c: #999999#\n}');

        bt("a = 1e+2");
        bt("a = 1e-2");
        bt("do{x()}while(a>1)", "do {\n    x()\n} while (a > 1)");

        bt("x(); /reg/exp.match(something)", "x();\n/reg/exp.match(something)");

        test_fragment("something();(", "something();\n(");
        test_fragment("#!she/bangs, she bangs\nf=1", "#!she/bangs, she bangs\n\nf = 1");
        test_fragment("#!she/bangs, she bangs\n\nf=1", "#!she/bangs, she bangs\n\nf = 1");
        test_fragment("#!she/bangs, she bangs\n\n/* comment */", "#!she/bangs, she bangs\n\n/* comment */");
        test_fragment("#!she/bangs, she bangs\n\n\n/* comment */", "#!she/bangs, she bangs\n\n\n/* comment */");
        test_fragment("#", "#");
        test_fragment("#!", "#!");

        bt("function namespace::something()");

        test_fragment("<!--\nsomething();\n-->", "<!--\nsomething();\n-->");
        test_fragment("<!--\nif(i<0){bla();}\n-->", "<!--\nif (i < 0) {\n    bla();\n}\n-->");

        bt('{foo();--bar;}', '{\n    foo();\n    --bar;\n}');
        bt('{foo();++bar;}', '{\n    foo();\n    ++bar;\n}');
        bt('{--bar;}', '{\n    --bar;\n}');
        bt('{++bar;}', '{\n    ++bar;\n}');

        // Handling of newlines around unary ++ and -- operators
        bt('{foo\n++bar;}', '{\n    foo\n    ++bar;\n}');
        bt('{foo++\nbar;}', '{\n    foo++\n    bar;\n}');

        // This is invalid, but harder to guard against. Issue #203.
        bt('{foo\n++\nbar;}', '{\n    foo\n    ++\n    bar;\n}');


        // regexps
        bt('a(/abc\\/\\/def/);b()', "a(/abc\\/\\/def/);\nb()");
        bt('a(/a[b\\[\\]c]d/);b()', "a(/a[b\\[\\]c]d/);\nb()");
        test_fragment('a(/a[b\\[', "a(/a[b\\["); // incomplete char class
        // allow unescaped / in char classes
        bt('a(/[a/b]/);b()', "a(/[a/b]/);\nb()");

        bt('a=[[1,2],[4,5],[7,8]]', "a = [\n    [1, 2],\n    [4, 5],\n    [7, 8]\n]");
        bt('a=[a[1],b[4],c[d[7]]]', "a = [a[1], b[4], c[d[7]]]");
        bt('[1,2,[3,4,[5,6],7],8]', "[1, 2, [3, 4, [5, 6], 7], 8]");

        bt('[[["1","2"],["3","4"]],[["5","6","7"],["8","9","0"]],[["1","2","3"],["4","5","6","7"],["8","9","0"]]]',
            '[\n    [\n        ["1", "2"],\n        ["3", "4"]\n    ],\n    [\n        ["5", "6", "7"],\n        ["8", "9", "0"]\n    ],\n    [\n        ["1", "2", "3"],\n        ["4", "5", "6", "7"],\n        ["8", "9", "0"]\n    ]\n]');

        bt('{[x()[0]];indent;}', '{\n    [x()[0]];\n    indent;\n}');

        bt('return ++i', 'return ++i');
        bt('return !!x', 'return !!x');
        bt('return !x', 'return !x');
        bt('return [1,2]', 'return [1, 2]');
        bt('return;', 'return;');
        bt('return\nfunc', 'return\nfunc');
        bt('catch(e)', 'catch (e)');

        bt('var a=1,b={foo:2,bar:3},{baz:4,wham:5},c=4;', 'var a = 1,\n    b = {\n        foo: 2,\n        bar: 3\n    }, {\n        baz: 4,\n        wham: 5\n    }, c = 4;');
        bt('var a=1,b={foo:2,bar:3},{baz:4,wham:5},\nc=4;', 'var a = 1,\n    b = {\n        foo: 2,\n        bar: 3\n    }, {\n        baz: 4,\n        wham: 5\n    },\n    c = 4;');

        // inline comment
        bt('function x(/*int*/ start, /*string*/ foo)', 'function x( /*int*/ start, /*string*/ foo)');

        // javadoc comment
        bt('/**\n* foo\n*/', '/**\n * foo\n */');
        bt('{\n/**\n* foo\n*/\n}', '{\n    /**\n     * foo\n     */\n}');

        bt('var a,b,c=1,d,e,f=2;', 'var a, b, c = 1,\n    d, e, f = 2;');
        bt('var a,b,c=[],d,e,f=2;', 'var a, b, c = [],\n    d, e, f = 2;');

        bt('do/regexp/;\nwhile(1);', 'do /regexp/;\nwhile (1);'); // hmmm

        bt('var a = a,\na;\nb = {\nb\n}', 'var a = a,\n    a;\nb = {\n    b\n}');

        bt('var a = a,\n    /* c */\n    b;');
        bt('var a = a,\n    // c\n    b;');

        bt('foo.("bar");'); // weird element referencing


        bt('if (a) a()\nelse b()\nnewline()');
        bt('if (a) a()\nnewline()');
        bt('a=typeof(x)', 'a = typeof(x)');

        bt('var a = function() {\n    return null;\n},\n    b = false;');

        bt('var a = function() {\n    func1()\n}');
        bt('var a = function() {\n    func1()\n}\nvar b = function() {\n    func2()\n}');



        opts.jslint_happy = true;

        bt('a=typeof(x)', 'a = typeof (x)');
        bt('x();\n\nfunction(){}', 'x();\n\nfunction () {}');
        bt('function () {\n    var a, b, c, d, e = [],\n        f;\n}');
        test_fragment("// comment 1\n(function()", "// comment 1\n(function ()"); // typical greasemonkey start
        bt('var o1=$.extend(a);function(){alert(x);}', 'var o1 = $.extend(a);\n\nfunction () {\n    alert(x);\n}');

        opts.jslint_happy = false;

        test_fragment("// comment 2\n(function()", "// comment 2\n(function()"); // typical greasemonkey start
        bt("var a2, b2, c2, d2 = 0, c = function() {}, d = '';", "var a2, b2, c2, d2 = 0,\n    c = function() {}, d = '';");
        bt("var a2, b2, c2, d2 = 0, c = function() {},\nd = '';", "var a2, b2, c2, d2 = 0,\n    c = function() {},\n    d = '';");
        bt('var o2=$.extend(a);function(){alert(x);}', 'var o2 = $.extend(a);\n\nfunction() {\n    alert(x);\n}');

        bt('{"x":[{"a":1,"b":3},7,8,8,8,8,{"b":99},{"a":11}]}', '{\n    "x": [{\n            "a": 1,\n            "b": 3\n        },\n        7, 8, 8, 8, 8, {\n            "b": 99\n        }, {\n            "a": 11\n        }\n    ]\n}');

        bt('{"1":{"1a":"1b"},"2"}', '{\n    "1": {\n        "1a": "1b"\n    },\n    "2"\n}');
        bt('{a:{a:b},c}', '{\n    a: {\n        a: b\n    },\n    c\n}');

        bt('{[y[a]];keep_indent;}', '{\n    [y[a]];\n    keep_indent;\n}');

        bt('if (x) {y} else { if (x) {y}}', 'if (x) {\n    y\n} else {\n    if (x) {\n        y\n    }\n}');

        bt('if (foo) one()\ntwo()\nthree()');
        bt('if (1 + foo() && bar(baz()) / 2) one()\ntwo()\nthree()');
        bt('if (1 + foo() && bar(baz()) / 2) one();\ntwo();\nthree();');

        opts.indent_size = 1;
        opts.indent_char = ' ';
        bt('{ one_char() }', "{\n one_char()\n}");

        bt('var a,b=1,c=2', 'var a, b = 1,\n c = 2');

        opts.indent_size = 4;
        opts.indent_char = ' ';
        bt('{ one_char() }', "{\n    one_char()\n}");

        opts.indent_size = 1;
        opts.indent_char = "\t";
        bt('{ one_char() }', "{\n\tone_char()\n}");
        bt('x = a ? b : c; x;', 'x = a ? b : c;\nx;');

        opts.indent_size = 4;
        opts.indent_char = ' ';

        opts.preserve_newlines = false;

        bt('var\na=dont_preserve_newlines;', 'var a = dont_preserve_newlines;');

        // make sure the blank line between function definitions stays
        // even when preserve_newlines = false
        bt('function foo() {\n    return 1;\n}\n\nfunction foo() {\n    return 1;\n}');
        bt('function foo() {\n    return 1;\n}\nfunction foo() {\n    return 1;\n}',
           'function foo() {\n    return 1;\n}\n\nfunction foo() {\n    return 1;\n}'
          );
        bt('function foo() {\n    return 1;\n}\n\n\nfunction foo() {\n    return 1;\n}',
           'function foo() {\n    return 1;\n}\n\nfunction foo() {\n    return 1;\n}'
          );

        opts.preserve_newlines = true;
        bt('var\na=do_preserve_newlines;', 'var\na = do_preserve_newlines;');
        bt('// a\n// b\n\n// c\n// d');
        bt('if (foo) //  comment\n{\n    bar();\n}');


        opts.keep_array_indentation = true;
        bt("a = ['a', 'b', 'c',\n    'd', 'e', 'f']");
        bt("a = ['a', 'b', 'c',\n    'd', 'e', 'f',\n        'g', 'h', 'i']");
        bt("a = ['a', 'b', 'c',\n        'd', 'e', 'f',\n            'g', 'h', 'i']");


        bt('var x = [{}\n]', 'var x = [{}\n]');
        bt('var x = [{foo:bar}\n]', 'var x = [{\n        foo: bar\n    }\n]');
        bt("a = ['something',\n    'completely',\n    'different'];\nif (x);");
        bt("a = ['a','b','c']", "a = ['a', 'b', 'c']");
        bt("a = ['a',   'b','c']", "a = ['a', 'b', 'c']");

        bt("x = [{'a':0}]", "x = [{\n        'a': 0\n    }]");

        bt('{a([[a1]], {b;});}', '{\n    a([[a1]], {\n        b;\n    });\n}');

        bt('a = //comment\n/regex/;');

        test_fragment('/*\n * X\n */');
        test_fragment('/*\r\n * X\r\n */', '/*\n * X\n */');

        bt('if (a)\n{\nb;\n}\nelse\n{\nc;\n}', 'if (a) {\n    b;\n} else {\n    c;\n}');


        opts.brace_style = 'expand';

        bt('//case 1\nif (a == 1)\n{}\n//case 2\nelse if (a == 2)\n{}');
        bt('if (a)\n{\nb;\n}\nelse\n{\nc;\n}', 'if (a)\n{\n    b;\n}\nelse\n{\n    c;\n}');
        test_fragment('if (foo) {', 'if (foo)\n{');
        test_fragment('foo {', 'foo\n{');
        test_fragment('return {', 'return {'); // return needs the brace. maybe something else as well: feel free to report.
        test_fragment('return /* inline */ {', 'return /* inline */ {');
        // test_fragment('return\n{', 'return\n{'); // can't support this?, but that's an improbable and extreme case anyway.
        test_fragment('return;\n{', 'return;\n{');
        bt("throw {}");
        bt("throw {\n    foo;\n}");

        bt('if (a)\n{\nb;\n}\nelse\n{\nc;\n}', 'if (a)\n{\n    b;\n}\nelse\n{\n    c;\n}');
        bt('var foo = {}');
        bt('if (a)\n{\nb;\n}\nelse\n{\nc;\n}', 'if (a)\n{\n    b;\n}\nelse\n{\n    c;\n}');
        test_fragment('if (foo) {', 'if (foo)\n{');
        test_fragment('foo {', 'foo\n{');
        test_fragment('return {', 'return {'); // return needs the brace. maybe something else as well: feel free to report.
        test_fragment('return /* inline */ {', 'return /* inline */ {');
        // test_fragment('return\n{', 'return\n{'); // can't support this?, but that's an improbable and extreme case anyway.
        test_fragment('return;\n{', 'return;\n{');


        opts.brace_style = 'collapse';

        bt('//case 1\nif (a == 1) {}\n//case 2\nelse if (a == 2) {}');
        bt('if (a)\n{\nb;\n}\nelse\n{\nc;\n}', 'if (a) {\n    b;\n} else {\n    c;\n}');
        test_fragment('if (foo) {', 'if (foo) {');
        test_fragment('foo {', 'foo {');
        test_fragment('return {', 'return {'); // return needs the brace. maybe something else as well: feel free to report.
        test_fragment('return /* inline */ {', 'return /* inline */ {');
        // test_fragment('return\n{', 'return\n{'); // can't support this?, but that's an improbable and extreme case anyway.
        test_fragment('return;\n{', 'return; {');

        bt('if (foo) bar();\nelse break');
        bt('function x() {\n    foo();\n}zzz', 'function x() {\n    foo();\n}\nzzz');
        bt('a: do {} while (); xxx', 'a: do {} while ();\nxxx');

        bt('var a = new function();');
        test_fragment('new function');

        opts.brace_style = "end-expand";

        bt('//case 1\nif (a == 1) {}\n//case 2\nelse if (a == 2) {}');
        bt('if(1){2}else{3}', "if (1) {\n    2\n}\nelse {\n    3\n}");
        bt('try{a();}catch(b){c();}finally{d();}', "try {\n    a();\n}\ncatch (b) {\n    c();\n}\nfinally {\n    d();\n}");
        bt('if(a){b();}else if(c) foo();', "if (a) {\n    b();\n}\nelse if (c) foo();");
        bt("if (a) {\n// comment\n}else{\n// comment\n}", "if (a) {\n    // comment\n}\nelse {\n    // comment\n}"); // if/else statement with empty body
        bt('if (x) {y} else { if (x) {y}}', 'if (x) {\n    y\n}\nelse {\n    if (x) {\n        y\n    }\n}');
        bt('if (a)\n{\nb;\n}\nelse\n{\nc;\n}', 'if (a) {\n    b;\n}\nelse {\n    c;\n}');

        test_fragment('    /*\n* xx\n*/\n// xx\nif (foo) {\n    bar();\n}', '    /*\n     * xx\n     */\n    // xx\n    if (foo) {\n        bar();\n    }');

        bt('if (foo) {}\nelse /regex/.test();');
        bt('if (foo) /regex/.test();');

        bt('a = <?= external() ?> ;'); // not the most perfect thing in the world, but you're the weirdo beaufifying php mix-ins with javascript beautifier
        bt('a = <%= external() %> ;');

        bt('// func-comment\n\nfunction foo() {}\n\n// end-func-comment');

        test_fragment('roo = {\n    /*\n    ****\n      FOO\n    ****\n    */\n    BAR: 0\n};');

        bt('"foo""bar""baz"', '"foo"\n"bar"\n"baz"');
        bt("'foo''bar''baz'", "'foo'\n'bar'\n'baz'");


        test_fragment("if (zz) {\n    // ....\n}\n(function");

        bt("{\n    get foo() {}\n}");
        bt("{\n    var a = get\n    foo();\n}");
        bt("{\n    set foo() {}\n}");
        bt("{\n    var a = set\n    foo();\n}");
        bt("var x = {\n    get function()\n}");
        bt("var x = {\n    set function()\n}");
        bt("var x = set\n\nfunction() {}", "var x = set\n\n    function() {}");

        bt('<!-- foo\nbar();\n-->');
        bt('<!-- dont crash');
        bt('for () /abc/.test()');
        bt('if (k) /aaa/m.test(v) && l();');
        bt('switch (true) {\n    case /swf/i.test(foo):\n        bar();\n}');
        bt('createdAt = {\n    type: Date,\n    default: Date.now\n}');
        bt('switch (createdAt) {\n    case a:\n        Date,\n    default:\n        Date.now\n}');
        opts.space_before_conditional = false;
        bt('if(a) b()');
        opts.space_before_conditional = true;


        opts.preserve_newlines = true;
        bt('var a = 42; // foo\n\nvar b;');
        bt('var a = 42; // foo\n\n\nvar b;');
        bt("var a = 'foo' +\n    'bar';");
        bt("var a = \"foo\" +\n    \"bar\";");

        opts.unescape_strings = false;
        test_fragment('"\\x22\\x27", \'\\x22\\x27\', "\\x5c", \'\\x5c\', "\\xff and \\xzz", "unicode \\u0000 \\u0022 \\u0027 \\u005c \\uffff \\uzzzz"');
        opts.unescape_strings = true;
        test_fragment('"\\x20\\x40\\x4a"', '" @J"');
        test_fragment('"\\xff\\x40\\x4a"');
        test_fragment('"\\u0072\\u016B\\u0137\\u012B\\u0074\\u0069\\u0073"', '"rūķītis"');
        test_fragment('"Google Chrome est\\u00E1 actualizado."', '"Google Chrome está actualizado."');
        /*
        bt('"\\x22\\x27",\'\\x22\\x27\',"\\x5c",\'\\x5c\',"\\xff and \\xzz","unicode \\u0000 \\u0022 \\u0027 \\u005c \\uffff \\uzzzz"',
           '"\\"\'", \'"\\\'\', "\\\\", \'\\\\\', "\\xff and \\xzz", "unicode \\u0000 \\" \' \\\\ \\uffff \\uzzzz"');
        */
        opts.unescape_strings = false;
        bt('foo = {\n    x: y, // #44\n    w: z // #44\n}');

        bt('return function();');
        bt('var a = function();');
        bt('var a = 5 + function();');

        bt('3.*7;', '3. * 7;');
        bt('import foo.*;', 'import foo.*;'); // actionscript's import
        test_fragment('function f(a: a, b: b)'); // actionscript

        bt('{\n    foo // something\n    ,\n    bar // something\n    baz\n}');
        bt('function a(a) {} function b(b) {} function c(c) {}', 'function a(a) {}\nfunction b(b) {}\nfunction c(c) {}');
        bt('foo(a, function() {})');

        bt('foo(a, /regex/)');

        bt('/* foo */\n"x"');

        opts.break_chained_methods = false;
        opts.preserve_newlines = false;
        bt('foo\n.bar()\n.baz().cucumber(fat)', 'foo.bar().baz().cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat); foo.bar().baz().cucumber(fat)', 'foo.bar().baz().cucumber(fat);\nfoo.bar().baz().cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat)\n foo.bar().baz().cucumber(fat)', 'foo.bar().baz().cucumber(fat)\nfoo.bar().baz().cucumber(fat)');
        bt('this\n.something = foo.bar()\n.baz().cucumber(fat)', 'this.something = foo.bar().baz().cucumber(fat)');
        bt('this.something.xxx = foo.moo.bar()');
        bt('this\n.something\n.xxx = foo.moo\n.bar()', 'this.something.xxx = foo.moo.bar()');

        opts.break_chained_methods = false;
        opts.preserve_newlines = true;
        bt('foo\n.bar()\n.baz().cucumber(fat)', 'foo\n    .bar()\n    .baz().cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat); foo.bar().baz().cucumber(fat)', 'foo\n    .bar()\n    .baz().cucumber(fat);\nfoo.bar().baz().cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat)\n foo.bar().baz().cucumber(fat)', 'foo\n    .bar()\n    .baz().cucumber(fat)\nfoo.bar().baz().cucumber(fat)');
        bt('this\n.something = foo.bar()\n.baz().cucumber(fat)', 'this\n    .something = foo.bar()\n    .baz().cucumber(fat)');
        bt('this.something.xxx = foo.moo.bar()');
        bt('this\n.something\n.xxx = foo.moo\n.bar()', 'this\n    .something\n    .xxx = foo.moo\n    .bar()');

        opts.break_chained_methods = true;
        opts.preserve_newlines = false;
        bt('foo\n.bar()\n.baz().cucumber(fat)', 'foo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat); foo.bar().baz().cucumber(fat)', 'foo.bar()\n    .baz()\n    .cucumber(fat);\nfoo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat)\n foo.bar().baz().cucumber(fat)', 'foo.bar()\n    .baz()\n    .cucumber(fat)\nfoo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('this\n.something = foo.bar()\n.baz().cucumber(fat)', 'this.something = foo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('this.something.xxx = foo.moo.bar()');
        bt('this\n.something\n.xxx = foo.moo\n.bar()', 'this.something.xxx = foo.moo.bar()');

        opts.break_chained_methods = true;
        opts.preserve_newlines = true;
        bt('foo\n.bar()\n.baz().cucumber(fat)', 'foo\n    .bar()\n    .baz()\n    .cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat); foo.bar().baz().cucumber(fat)', 'foo\n    .bar()\n    .baz()\n    .cucumber(fat);\nfoo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('foo\n.bar()\n.baz().cucumber(fat)\n foo.bar().baz().cucumber(fat)', 'foo\n    .bar()\n    .baz()\n    .cucumber(fat)\nfoo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('this\n.something = foo.bar()\n.baz().cucumber(fat)', 'this\n    .something = foo.bar()\n    .baz()\n    .cucumber(fat)');
        bt('this.something.xxx = foo.moo.bar()');
        bt('this\n.something\n.xxx = foo.moo\n.bar()', 'this\n    .something\n    .xxx = foo.moo\n    .bar()');

        opts.break_chained_methods = false;

        opts.preserve_newlines = false;
        opts.wrap_line_length = 0;
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat && "sassy") || (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_.okay();');

        opts.wrap_line_length = 70;
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat && "sassy") || (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_.okay();');

        opts.wrap_line_length = 40;
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat &&\n' +
                      '    "sassy") || (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n' +
                      '    .but_this_can\n' +
                      'if (wraps_can_occur &&\n' +
                      '    inside_an_if_block) that_is_.okay();');

        opts.wrap_line_length = 41;
        // NOTE: wrap is only best effort - line continues until next wrap point is found.
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat && "sassy") ||\n' +
                      '    (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n' +
                      '    .but_this_can\n' +
                      'if (wraps_can_occur &&\n' +
                      '    inside_an_if_block) that_is_.okay();');

        opts.wrap_line_length = 45;
        // NOTE: wrap is only best effort - line continues until next wrap point is found.
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('{\n' +
                      '    foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      '    Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      '    if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();\n' +
                      '}',
                      /* expected */
                      '{\n' +
                      '    foo.bar().baz().cucumber((fat && "sassy") ||\n' +
                      '        (leans && mean));\n' +
                      '    Test_very_long_variable_name_this_should_never_wrap\n' +
                      '        .but_this_can\n' +
                      '    if (wraps_can_occur &&\n' +
                      '        inside_an_if_block) that_is_.okay();\n' +
                      '}');

        opts.preserve_newlines = true;
        opts.wrap_line_length = 0;
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat && "sassy") || (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n' +
                      '    .but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n' +
                      '        .okay();');

        opts.wrap_line_length = 70;
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat && "sassy") || (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n' +
                      '    .but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n' +
                      '        .okay();');


        opts.wrap_line_length = 40;
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat &&\n' +
                      '    "sassy") || (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n' +
                      '    .but_this_can\n' +
                      'if (wraps_can_occur &&\n' +
                      '    inside_an_if_block) that_is_\n' +
                      '        .okay();');

        opts.wrap_line_length = 41;
        // NOTE: wrap is only best effort - line continues until next wrap point is found.
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      'if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();',
                      /* expected */
                      'foo.bar().baz().cucumber((fat && "sassy") ||\n' +
                      '    (leans && mean));\n' +
                      'Test_very_long_variable_name_this_should_never_wrap\n' +
                      '    .but_this_can\n' +
                      'if (wraps_can_occur &&\n' +
                      '    inside_an_if_block) that_is_\n' +
                      '        .okay();');

        opts.wrap_line_length = 45;
        // NOTE: wrap is only best effort - line continues until next wrap point is found.
        //.............---------1---------2---------3---------4---------5---------6---------7
        //.............1234567890123456789012345678901234567890123456789012345678901234567890
        test_fragment('{\n' +
                      '    foo.bar().baz().cucumber((fat && "sassy") || (leans\n&& mean));\n' +
                      '    Test_very_long_variable_name_this_should_never_wrap\n.but_this_can\n' +
                      '    if (wraps_can_occur && inside_an_if_block) that_is_\n.okay();\n' +
                      '}',
                      /* expected */
                      '{\n' +
                      '    foo.bar().baz().cucumber((fat && "sassy") ||\n' +
                      '        (leans && mean));\n' +
                      '    Test_very_long_variable_name_this_should_never_wrap\n' +
                      '        .but_this_can\n' +
                      '    if (wraps_can_occur &&\n' +
                      '        inside_an_if_block) that_is_\n' +
                      '            .okay();\n' +
                      '}');

        opts.wrap_line_length = 0;

        opts.preserve_newlines = false;
        bt('if (foo) // comment\n    bar();');
        bt('if (foo) // comment\n    (bar());');
        bt('if (foo) // comment\n    (bar());');
        bt('if (foo) // comment\n    /asdf/;');

        // these aren't ready yet.
        //bt('if (foo) // comment\n    bar() /*i*/ + baz() /*j\n*/ + asdf();');

        bt('if\n(foo)\nif\n(bar)\nif\n(baz)\nwhee();\na();', 'if (foo) if (bar) if (baz) whee();\na();');
        bt('if\n(foo)\nif\n(bar)\nif\n(baz)\nwhee();\nelse\na();', 'if (foo) if (bar) if (baz) whee();\n        else a();');
        bt('if (foo)\nbar();\nelse\ncar();', 'if (foo) bar();\nelse car();');

        bt('if (foo) if (bar) if (baz) whee();\na();');
        bt('if (foo) a()\nif (bar) if (baz) whee();\na();');
        bt('if (options)\n' +
           '    for (var p in options)\n' +
           '        this[p] = options[p];',
           'if (options) for (var p in options) this[p] = options[p];');

        bt('function f(a, b, c,\nd, e) {}',
            'function f(a, b, c, d, e) {}');

        bt('function f(a,b) {if(a) b()}function g(a,b) {if(!a) b()}',
            'function f(a, b) {\n    if (a) b()\n}\nfunction g(a, b) {\n    if (!a) b()\n}');
        bt('function f(a,b) {if(a) b()}\n\n\n\nfunction g(a,b) {if(!a) b()}',
            'function f(a, b) {\n    if (a) b()\n}\n\nfunction g(a, b) {\n    if (!a) b()\n}');

        // This is not valid syntax, but still want to behave reasonably and not side-effect
        bt('(if(a) b())(if(a) b())',
            '(\nif (a) b())(\nif (a) b())');
        bt('(if(a) b())\n\n\n(if(a) b())',
            '(\nif (a) b())\n(\nif (a) b())');



        bt("if\n(a)\nb();", "if (a) b();");
        bt('var a =\nfoo', 'var a = foo');
        bt('var a = {\n"a":1,\n"b":2}', "var a = {\n    \"a\": 1,\n    \"b\": 2\n}");
        bt("var a = {\n'a':1,\n'b':2}", "var a = {\n    'a': 1,\n    'b': 2\n}");
        bt('var a = /*i*/ "b";');
        bt('var a = /*i*/\n"b";', 'var a = /*i*/ "b";');
        bt('var a = /*i*/\nb;', 'var a = /*i*/ b;');
        bt('{\n\n\n"x"\n}', '{\n    "x"\n}');
        bt('if(a &&\nb\n||\nc\n||d\n&&\ne) e = f', 'if (a && b || c || d && e) e = f');
        bt('if(a &&\n(b\n||\nc\n||d)\n&&\ne) e = f', 'if (a && (b || c || d) && e) e = f');
        test_fragment('\n\n"x"', '"x"');
        bt('a = 1;\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nb = 2;',
                'a = 1;\nb = 2;');

        opts.preserve_newlines = true;
        bt('if (foo) // comment\n    bar();');
        bt('if (foo) // comment\n    (bar());');
        bt('if (foo) // comment\n    (bar());');
        bt('if (foo) // comment\n    /asdf/;');

        // these aren't ready yet.
        // bt('if (foo) // comment\n    bar() /*i*/ + baz() /*j\n*/ + asdf();');
        bt('if\n(foo)\nif\n(bar)\nif\n(baz)\nwhee();\na();', 'if (foo)\n    if (bar)\n        if (baz)\n            whee();\na();');
        bt('if\n(foo)\nif\n(bar)\nif\n(baz)\nwhee();\nelse\na();', 'if (foo)\n    if (bar)\n        if (baz)\n            whee();\n        else\n            a();');
        bt('if (foo) bar();\nelse\ncar();', 'if (foo) bar();\nelse\n    car();');

        bt('if (foo) if (bar) if (baz) whee();\na();');
        bt('if (foo) a()\nif (bar) if (baz) whee();\na();');
        bt('if (options)\n' +
           '    for (var p in options)\n' +
           '        this[p] = options[p];');

        bt('function f(a, b, c,\nd, e) {}',
            'function f(a, b, c,\n    d, e) {}');

        bt('function f(a,b) {if(a) b()}function g(a,b) {if(!a) b()}',
            'function f(a, b) {\n    if (a) b()\n}\nfunction g(a, b) {\n    if (!a) b()\n}');
        bt('function f(a,b) {if(a) b()}\n\n\n\nfunction g(a,b) {if(!a) b()}',
            'function f(a, b) {\n    if (a) b()\n}\n\n\n\nfunction g(a, b) {\n    if (!a) b()\n}');
        // This is not valid syntax, but still want to behave reasonably and not side-effect
        bt('(if(a) b())(if(a) b())',
            '(\nif (a) b())(\nif (a) b())');
        bt('(if(a) b())\n\n\n(if(a) b())',
            '(\nif (a) b())\n\n\n(\nif (a) b())');


        bt("if\n(a)\nb();", "if (a)\n    b();");
        bt('var a =\nfoo', 'var a =\n    foo');
        bt('var a = {\n"a":1,\n"b":2}', "var a = {\n    \"a\": 1,\n    \"b\": 2\n}");
        bt("var a = {\n'a':1,\n'b':2}", "var a = {\n    'a': 1,\n    'b': 2\n}");
        bt('var a = /*i*/ "b";');
        bt('var a = /*i*/\n"b";', 'var a = /*i*/\n    "b";');
        bt('var a = /*i*/\nb;', 'var a = /*i*/\n    b;');
        bt('{\n\n\n"x"\n}', '{\n\n\n    "x"\n}');
        bt('if(a &&\nb\n||\nc\n||d\n&&\ne) e = f', 'if (a &&\n    b ||\n    c || d &&\n    e) e = f');
        bt('if(a &&\n(b\n||\nc\n||d)\n&&\ne) e = f', 'if (a &&\n    (b ||\n    c || d) &&\n    e) e = f');
        test_fragment('\n\n"x"', '"x"');

        // this beavior differs between js and python, defaults to unlimited in js, 10 in python
        bt('a = 1;\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nb = 2;',
            'a = 1;\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nb = 2;');
        opts.max_preserve_newlines = 8;
        bt('a = 1;\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nb = 2;',
            'a = 1;\n\n\n\n\n\n\n\nb = 2;');

        Urlencoded.run_tests(sanitytest);

        return sanitytest;
    }

    return beautifier_tests();
}

if (typeof exports !== "undefined") {
    exports.run_beautifier_tests = run_beautifier_tests;
}